<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<style>
		.border-radius {
			width: 160px;
			height: 80px;
			background-color: red;
			border-radius: 6px;
			position: relative;
		}

		.border-radius::after {
			content: '';
			position: absolute;
			top: 0;
			right: -20px;
			width: 30px;
			height: 30px;
			border-style: solid;
			border-width: 0 0 30px 30px;
			border-radius: 0 0 60px 0;
			border-bottom-color: red;
			border-left-color: transparent;
		}

		
		</style>
		<div class="border-radius"></div>
		</div>
	</body>
</html>
